Against the odds on the slopes of Mount Everest, a Nepali climbing guide missing for six days and feared dead has been found alive after dragging himself alone down toward Base Camp, officials said. By the time he was discovered, his wife said, she had already started last rite prayers. Speaking from a hospital in the capital Kathmandu, where he is now recovering, she described a family swinging from grief to disbelief. Mountaineer Dawa Sherpa - who is in his 50s, and is better known as "Hillary" after famed climber Edmund…